usa.gov zone: The server(s) were not responsive to queries over TCP. (13.248.142.184, 76.223.9.162)
usa.gov zone: The server(s) were not responsive to queries over UDP. (2600:1f14:653:bb00:b24e:739c:b87d:8fee, 2600:1f16:8f2:d500::4)
usa.gov/A: DNSSEC was effectively downgraded because no response was received from the server over UDP (tried 11 times) with EDNS enabled. (13.248.144.182, 76.223.9.162, UDP_-_NOEDNS_)
usa.gov/A: No response was received from the server over UDP (tried 11 times) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). (13.248.144.182, 76.223.9.162, UDP_-_EDNS0_4096_D_KN)
usa.gov/A: No response was received from the server over UDP (tried 12 times). (2600:1f14:653:bb00:b24e:739c:b87d:8fee, 2600:1f16:8f2:d500::4, UDP_-_NOEDNS_)
usa.gov/A: The DNSSEC records necessary to validate the response could not be retrieved from the server. (13.248.144.182, 76.223.9.162, UDP_-_EDNS0_4096_D_KN)
usa.gov/DNSKEY: No response was received from the server over TCP (tried 12 times). (13.248.142.184, TCP_-_EDNS0_4096_D_KN)
usa.gov/DNSKEY: No response was received from the server over UDP (tried 12 times). (13.248.144.182, UDP_-_NOEDNS_)
usa.gov/DNSKEY: No response was received from the server over UDP (tried 4 times). (13.248.144.182, UDP_-_EDNS0_512_D_KN)
usa.gov/NS: No response was received from the server over UDP (tried 12 times). (13.248.142.184, 2600:1f14:653:bb00:b24e:739c:b87d:8fee, 2600:1f16:8f2:d500::4, UDP_-_NOEDNS_)
usa.gov/NSEC3PARAM: No response was received from the server over UDP (tried 12 times). (76.223.24.135, UDP_-_NOEDNS_)
usa.gov/SOA: No response was received from the server over TCP (tried 3 times). (13.248.142.184, 76.223.9.162, TCP_-_EDNS0_4096_D_N)
Warnings (7)
usa.gov/A: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). (76.223.24.135, UDP_-_EDNS0_4096_D_KN)
usa.gov/AAAA: No response was received until the UDP payload size was decreased, indicating that the server might be attempting to send a payload that exceeds the path maximum transmission unit (PMTU) size. (13.248.144.182, 76.223.24.135, UDP_-_EDNS0_4096_D_KN)
usa.gov/NS: No response was received until the UDP payload size was decreased, indicating that the server might be attempting to send a payload that exceeds the path maximum transmission unit (PMTU) size. (76.223.24.135, UDP_-_EDNS0_4096_D_KN)
usa.gov/NSEC3PARAM: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). (13.248.142.184, UDP_-_EDNS0_4096_D_KN)
usa.gov/SOA: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). (13.248.149.147, 76.223.24.135, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
usa.gov/SOA: No response was received from the server over UDP (tried 7 times) until the NSID EDNS option was removed (however, this server appeared to respond legitimately to other queries with the NSID EDNS option present). (76.223.9.162, UDP_-_EDNS0_4096_D_KN)
usa.gov/SOA: No response was received until the UDP payload size was decreased, indicating that the server might be attempting to send a payload that exceeds the path maximum transmission unit (PMTU) size. (13.248.144.182, 76.223.24.135, UDP_-_EDNS0_4096_D_KN)